1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/*
Copyright (C) 2014 CSP Innovazione nelle ICT s.c.a r.l. (http://www.csp.it/)
Copyright (C) 2016 Matthias P. Braendli (http://www.opendigitalradio.org)
Copyright (C) 2015 Data Path
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Authors:
Sergio Sagliocco <sergio.sagliocco@csp.it>
Matthias P. Braendli <matthias@mpb.li>
/ | |- ')|) |-|_ _ (|,_ .| _ ,_ \
Data Path \(|(||_(|/_| (||_||(a)_||||(|||.(_()|||/
*/
#include "figs.hpp"
#include <cstdio>
#include <cstring>
#include <map>
#include <set>
/* EN 300 401, 8.1.14.3 Service component label
* The combination of the SId and the SCIdS provides a service component
* identifier which is valid globally.
*/
using SId_t = int;
using SCIdS_t = int;
static std::set<std::pair<SId_t, SCIdS_t> > components_seen;
bool fig0_8_is_complete(SId_t SId, SCIdS_t SCIdS)
{
auto key = std::make_pair(SId, SCIdS);
bool complete = components_seen.count(key);
if (complete) {
components_seen.clear();
}
else {
components_seen.insert(key);
}
return complete;
}
// FIG 0/8 Service component global definition
// ETSI EN 300 401 6.3.5
bool fig0_8(fig0_common_t& fig0, int indent)
{
uint32_t SId;
uint16_t SCId;
uint8_t i = 1, Rfa, SCIdS, SubChId, FIDCId;
char tmpbuf[256];
char desc[256];
bool Ext_flag, LS_flag, MSC_FIC_flag;
uint8_t* f = fig0.f;
bool complete = false;
while (i < (fig0.figlen - (2 + (2 * fig0.pd())))) {
// iterate over service component global definition
if (fig0.pd() == 0) {
// Programme services, 16 bit SId
SId = (f[i] << 8) | f[i+1];
i += 2;
}
else {
// Data services, 32 bit SId
SId = ((uint32_t)f[i] << 24) | ((uint32_t)f[i+1] << 16) |
((uint32_t)f[i+2] << 8) | (uint32_t)f[i+3];
i += 4;
}
Ext_flag = f[i] >> 7;
Rfa = (f[i] >> 4) & 0x7;
SCIdS = f[i] & 0x0F;
complete |= fig0_8_is_complete(SId, SCIdS);
sprintf(desc, "SId=0x%X, Ext flag=%d 8-bit Rfa %s", SId, Ext_flag, (Ext_flag)?"present":"absent");
if (Rfa != 0) {
sprintf(tmpbuf, ", Rfa=%d invalid value", Rfa);
strcat(desc, tmpbuf);
}
sprintf(tmpbuf, ", SCIdS=0x%X", SCIdS);
strcat(desc, tmpbuf);
i++;
if (i < fig0.figlen) {
LS_flag = f[i] >> 7;
sprintf(tmpbuf, ", L/S flag=%d %s", LS_flag, (LS_flag)?"Long form":"Short form");
strcat(desc, tmpbuf);
if (LS_flag == 0) {
// Short form
if (i < (fig0.figlen - Ext_flag)) {
MSC_FIC_flag = (f[i] >> 6) & 0x01;
if (MSC_FIC_flag == 0) {
// MSC in stream mode and SubChId identifies the sub-channel
SubChId = f[i] & 0x3F;
sprintf(tmpbuf, ", MSC/FIC flag=%d MSC, SubChId=0x%X", MSC_FIC_flag, SubChId);
strcat(desc, tmpbuf);
}
else {
// FIC and FIDCId identifies the component
FIDCId = f[i] & 0x3F;
sprintf(tmpbuf, ", MSC/FIC flag=%d FIC, FIDCId=0x%X", MSC_FIC_flag, FIDCId);
strcat(desc, tmpbuf);
}
if (Ext_flag == 1) {
// Rfa field present
Rfa = f[i+1];
if (Rfa != 0) {
sprintf(tmpbuf, ", Rfa=0x%X invalid value", Rfa);
strcat(desc, tmpbuf);
}
}
}
i += (1 + Ext_flag);
}
else {
// Long form
if (i < (fig0.figlen - 1)) {
Rfa = (f[i] >> 4) & 0x07;
SCId = (((uint16_t)f[i] & 0x0F) << 8) | (uint16_t)f[i+1];
if (Rfa != 0) {
sprintf(tmpbuf, ", Rfa=%d invalid value", Rfa);
strcat(desc, tmpbuf);
}
sprintf(tmpbuf, ", SCId=0x%X", SCId);
strcat(desc, tmpbuf);
}
i += 2;
}
}
printbuf(desc, indent+1, NULL, 0);
}
return complete;
}
|
